I've made 4 new slings in the past week, two for a friend that are very simple, one that's my own attempt at something I've seen before and one that I don't think anyone has made before.
I finally convinced a friend to take up slinging (or at least give it a go)! Unfortunately he lives back in England rather than over here in Finland, so we won't be meeting up regularly but still it's cool that I might brace finally converted someone

I made him a really simple paracord and leather sling using a pouch that I took off a failed experiment from a while ago. The pouch is great and should ensure that there are few slippages. The other is the super simple single-piece paracord sling which I actually really like as a design. Super simple, slightly better hold on ammo than a split pouch and can be adjusted,if necessary, really easily. He's going to mostly be using tennis balls and these slings work perfectly for them.
The third sling is jute with a synthetic rope end which is... ok. It's got a lot of twist to it in the synthetic end which is more just aggravating to me because I like neat slings. I haven't had a lot of time to test it so I'll have to see if it has any effect on performance but the few throws I've had with it have been pretty good, I just wish it looked neater...
The last sling I made last night and was an experiment. I took two lengths of jute, folded each of them in half, twisted them separately to form two lengths, threaded them through each other at the folded end, tied the same knot I use for the simple paracord sling on each side to hold the end of the pouch and it was done! A super thin, super light, super strong split pouch jute sling. I did a bit of testing and it works pretty well. One problem is that the pouch was large enough for tennis balls to go straight through which I didn't realise at first. I think I could adjust it to fix that, but then again, if I place the ball right, it stops slipping through so it isn't much of a problem.